Solarposition.org

Nara · Japan · 34.46° N · 135.95° E

Solar position in Ōuda-yamaguchi

Sun position, daylight and the best solar panel angle for Ōuda-yamaguchi — computed for 34.46° N, 135.95° E, 398 m above sea level.

Sunrise today06:09104° ESE
Sunset today17:10256° WSW
Best panel angle31°year-round, facing south
Off-grid angle45°best for the darkest month

The sun right now

Azimuth180.0°
Elevation43.5°
At solar noon, 11:40Open on the sun map

Sun in Ōuda-yamaguchi today

Sunday, 25 October 2026 · local time UTC+9

EventTimeDirection / height
Astronomical dawn04:45sun 18° below horizon
Nautical dawn05:1412° below
Civil dawn05:446° below
Sunrise06:09104° ESE
Golden hour ends06:44sun 6° up
Solar noon11:4043.5° high
Golden hour starts16:35sun 6° up
Sunset17:10256° WSW
Civil dusk17:366° below
Nautical dusk18:0512° below
Astronomical dusk18:3418° below
Day length11 h 01 min

Sun path diagram for Ōuda-yamaguchi

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice5678910111213141516171819EquinoxDecember solstice8910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 79.0° at solar noon in Ōuda-yamaguchi; on the December solstice only 32.1°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 58° arc along the horizon.

Sunrise, sunset and sun height by month

Values for the 21st of each month, local clock time including daylight saving time.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January07:0012:0717:1410 h 14 min35.6°
February06:3512:0917:4411 h 09 min45.0°
March05:5912:0318:0812 h 09 min55.8°
April05:1811:5518:3213 h 14 min67.4°
May04:5011:5218:5514 h 06 min75.7°
June04:4411:5719:1114 h 28 min79.0°
July04:5812:0219:0614 h 08 min76.0°
August05:2111:5918:3713 h 16 min67.7°
September05:4311:4917:5512 h 12 min56.3°
October06:0611:4017:1511 h 09 min44.9°
November06:3411:4116:4810 h 14 min35.7°
December06:5811:5416:499 h 51 min32.1°

A year of daylight in Ōuda-yamaguchi

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Ōuda-yamaguchi

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

31°collects the most energy over a year: 1309 kWh per kWp.

45°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 31°Best worst-month 45°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°115888%1.802.4×
15°126997%2.401.8×
30°1309100%2.851.5×
31° year-round best1309100%2.881.5×
34° = latitude1307100%2.951.4×
45° off-grid best127697%3.131.3×
60°117390%3.211.4×
70°106982%3.151.6×
90°79661%2.792.1×

A fixed array in Ōuda-yamaguchi produces the most over a year at 31°. The design month for an off-grid system is December: at 45° it makes 3.13 kWh per kWp a day, 9% more than at 31°, and costs 3% of the yearly total. Why steep panels win winter.

Off-grid solar in Ōuda-yamaguchi at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 31° (year-round best).

012345January: 3.19 (70°)3.2JanFebruary: 3.30 (70°)3.3FebMarch: 3.42 (70°)3.4MarApril: 3.05 (70°)3.0AprMay: 2.61 (70°)2.6MayJune: 2.19 (70°)2.2JunJuly: 2.29 (70°)2.3JulAugust: 2.79 (70°)2.8AugSeptember: 2.85 (70°)2.9SepOctober: 3.07 (70°)3.1OctNovember: 3.26 (70°)3.3NovDecember: 3.15 (70°)3.2Dec31°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 31°Mean temp.
January2.403.583.193.013.7 °C
February3.083.723.303.444.7 °C
March4.053.903.424.027.7 °C
April4.853.563.054.2112.6 °C
May5.243.122.614.1117.3 °C
June4.732.682.193.5321.1 °C
July4.912.832.293.6625.0 °C
August5.173.442.794.0925.9 °C
September4.063.462.853.5922.7 °C
October3.273.643.073.3517.1 °C
November2.633.783.263.1511.7 °C
December2.213.573.152.886.2 °C
Year3.89 avg3.44 avg1069 kWh1309 kWh

Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 540 Wp of panels at 70°, versus 410 Wp at 31°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Ōuda-yamaguchi

Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.

4.1 mrow pitch at 70°

3.6 mrow pitch at 31°

Row spacing calculator

How Ōuda-yamaguchi compares in Japan

Against the other 1,215 places in Japan with climate data, for a fixed array at its best angle.

268thof 1,216 places in Japan for sunshine, shared: 3.89 peak sun hours a day on flat ground.

+2%solar energy a year compared with the average place in Japan: 1,309 against 1,284 kWh per kWp.

−7 mindaylight on the longest day, compared with Tokyo: 14 h 28 min against 14 h 35 min.

31°best year-round tilt here; across Japan it runs from 17° in Miyakojima to 41° in Kushiro.

Of the 1,216 places in Japan, Miyakojima gets the most sun (4.34 peak sun hours a day) and Wakkanai and one other place the least (3.17); Ōuda-yamaguchi ranks joint 268th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.19 kWh a day here, against 2.14 kWh on average in Japan. The shortest day lasts 9 h 51 min, +7 min compared with Tokyo.

The sunniest places in Japan

Solar forecast for Ōuda-yamaguchi, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Ōuda-yamaguchi

What is the best solar panel angle in Ōuda-yamaguchi?
For a fixed array facing south, the best year-round tilt in Ōuda-yamaguchi is 31°, worth about 1309 kWh per kWp a year. An off-grid system that has to get through December does better at about 45°.
What time is sunrise and sunset in Ōuda-yamaguchi today?
On 25 October 2026 the sun rises at 06:09 and sets at 17:10 local time (UTC+9), giving 11 h 01 min of daylight. Solar noon is at 11:40.
How many peak sun hours does Ōuda-yamaguchi get?
On a flat surface 3.9 hours a day averaged over the year, from 2.2 in December to 5.2 in May. Panels tilted at 70° receive 2.7 sun hours a day in June.
How high does the sun get in Ōuda-yamaguchi?
At solar noon the sun stands 79.0° above the horizon on the June solstice and 32.1° on the December solstice.
Is Ōuda-yamaguchi a good place for solar panels?
With 3.9 peak sun hours a day on flat ground, Ōuda-yamaguchi ranks joint 268th of 1,216 places in Japan for sunshine. A 1 kWp array at the best angle (31°) makes about 1,309 kWh a year here, 2% more than the average place in Japan.

Places near Ōuda-yamaguchi

All places in Japan

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Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.